Features HIGH BRIGHTNESS AND LOW POWER CONSUMPTION: High strength LED signal light, possess low power consumption, can be easily viewed from a distance STRONG AND DURABLE: 50000 hours of service life, built in buzzer >85dB, possess sturdy and durable structure, can be used for a long time SWITCHABLE MODE: Each layer of lights can be switched to normal steady on or shining mode; Protection class IP54 dustproof FOR MACHINE TOOLS: These are lamps used in factories or industrial machinery. Typical uses are automated mechanical status lights, operator signal lights, or tilting tower lights CORROSION RESISTANT LAMP SHADE: PC material lamp shade, with high impact strength, a wide range of temperature, good size stability, good weather resistance, excellent electrical characteristics, no deformation, corrosion resistance Specification: Item Type: LED Signal Tower Stack Lights Voltage: DC24V Light Color: Red, yellow, green Product Current: Single color 100mA, buzzer 25mA Lamp Life: 50000H Buzzer Volume: >85dB Installation Method: Screw fixation Surface Temperature: 60℃ Product Frequency: 60-70 Weekly times per min Protection Level: IP54 Lamp Shade Material: PC Package List:1 x LED Signal Tower Stack Light Package List 1 x LED Signal Tower Stack Light